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<a name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a name="2" href="#2">2</a>   <em class="jxr_comment"> *  Copyright 2001-2005 Stephen Colebourne</em>
<a name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a name="4" href="#4">4</a>   <em class="jxr_comment"> *  Licensed under the Apache License, Version 2.0 (the "License");</em>
<a name="5" href="#5">5</a>   <em class="jxr_comment"> *  you may not use this file except in compliance with the License.</em>
<a name="6" href="#6">6</a>   <em class="jxr_comment"> *  You may obtain a copy of the License at</em>
<a name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a name="8" href="#8">8</a>   <em class="jxr_comment"> *      <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a name="10" href="#10">10</a>  <em class="jxr_comment"> *  Unless required by applicable law or agreed to in writing, software</em>
<a name="11" href="#11">11</a>  <em class="jxr_comment"> *  distributed under the License is distributed on an "AS IS" BASIS,</em>
<a name="12" href="#12">12</a>  <em class="jxr_comment"> *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a name="13" href="#13">13</a>  <em class="jxr_comment"> *  See the License for the specific language governing permissions and</em>
<a name="14" href="#14">14</a>  <em class="jxr_comment"> *  limitations under the License.</em>
<a name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a name="16" href="#16">16</a>  <strong class="jxr_keyword">package</strong> org.goda.time.format;
<a name="17" href="#17">17</a>  
<a name="18" href="#18">18</a>  
<a name="19" href="#19">19</a>  <em class="jxr_javadoccomment">/**</em>
<a name="20" href="#20">20</a>  <em class="jxr_javadoccomment"> * Utility methods used by formatters.</em>
<a name="21" href="#21">21</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a name="22" href="#22">22</a>  <em class="jxr_javadoccomment"> * FormatUtils is thread-safe and immutable.</em>
<a name="23" href="#23">23</a>  <em class="jxr_javadoccomment"> *</em>
<a name="24" href="#24">24</a>  <em class="jxr_javadoccomment"> * @author Brian S O'Neill</em>
<a name="25" href="#25">25</a>  <em class="jxr_javadoccomment"> * @since 1.0</em>
<a name="26" href="#26">26</a>  <em class="jxr_javadoccomment"> */</em>
<a name="27" href="#27">27</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/goda/time/format/FormatUtils.html">FormatUtils</a> {
<a name="28" href="#28">28</a>  
<a name="29" href="#29">29</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">double</strong> LOG_10 = Math.log(10);
<a name="30" href="#30">30</a>  
<a name="31" href="#31">31</a>      <em class="jxr_javadoccomment">/**</em>
<a name="32" href="#32">32</a>  <em class="jxr_javadoccomment">     * Restricted constructor.</em>
<a name="33" href="#33">33</a>  <em class="jxr_javadoccomment">     */</em>
<a name="34" href="#34">34</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/goda/time/format/FormatUtils.html">FormatUtils</a>() {
<a name="35" href="#35">35</a>      }
<a name="36" href="#36">36</a>  
<a name="37" href="#37">37</a>      <em class="jxr_javadoccomment">/**</em>
<a name="38" href="#38">38</a>  <em class="jxr_javadoccomment">     * Converts an integer to a string, prepended with a variable amount of '0'</em>
<a name="39" href="#39">39</a>  <em class="jxr_javadoccomment">     * pad characters, and appends it to the given buffer.</em>
<a name="40" href="#40">40</a>  <em class="jxr_javadoccomment">     *</em>
<a name="41" href="#41">41</a>  <em class="jxr_javadoccomment">     * &lt;p&gt;This method is optimized for converting small values to strings.</em>
<a name="42" href="#42">42</a>  <em class="jxr_javadoccomment">     *</em>
<a name="43" href="#43">43</a>  <em class="jxr_javadoccomment">     * @param buf receives integer converted to a string</em>
<a name="44" href="#44">44</a>  <em class="jxr_javadoccomment">     * @param value value to convert to a string</em>
<a name="45" href="#45">45</a>  <em class="jxr_javadoccomment">     * @param size minumum amount of digits to append</em>
<a name="46" href="#46">46</a>  <em class="jxr_javadoccomment">     */</em>
<a name="47" href="#47">47</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> appendPaddedInteger(StringBuffer buf, <strong class="jxr_keyword">int</strong> value, <strong class="jxr_keyword">int</strong> size) {
<a name="48" href="#48">48</a>          <strong class="jxr_keyword">if</strong> (value &lt; 0) {
<a name="49" href="#49">49</a>              buf.append('-');
<a name="50" href="#50">50</a>              <strong class="jxr_keyword">if</strong> (value != Integer.MIN_VALUE) {
<a name="51" href="#51">51</a>                  value = -value;
<a name="52" href="#52">52</a>              } <strong class="jxr_keyword">else</strong> {
<a name="53" href="#53">53</a>                  <strong class="jxr_keyword">for</strong> (; size &gt; 10; size--) {
<a name="54" href="#54">54</a>                      buf.append('0');
<a name="55" href="#55">55</a>                  }
<a name="56" href="#56">56</a>                  buf.append(<span class="jxr_string">""</span> + -(<strong class="jxr_keyword">long</strong>)Integer.MIN_VALUE);
<a name="57" href="#57">57</a>                  <strong class="jxr_keyword">return</strong>;
<a name="58" href="#58">58</a>              }
<a name="59" href="#59">59</a>          }
<a name="60" href="#60">60</a>          <strong class="jxr_keyword">if</strong> (value &lt; 10) {
<a name="61" href="#61">61</a>              <strong class="jxr_keyword">for</strong> (; size &gt; 1; size--) {
<a name="62" href="#62">62</a>                  buf.append('0');
<a name="63" href="#63">63</a>              }
<a name="64" href="#64">64</a>              buf.append((<strong class="jxr_keyword">char</strong>)(value + '0'));
<a name="65" href="#65">65</a>          } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (value &lt; 100) {
<a name="66" href="#66">66</a>              <strong class="jxr_keyword">for</strong> (; size &gt; 2; size--) {
<a name="67" href="#67">67</a>                  buf.append('0');
<a name="68" href="#68">68</a>              }
<a name="69" href="#69">69</a>              <em class="jxr_comment">// Calculate value div/mod by 10 without using two expensive</em>
<a name="70" href="#70">70</a>              <em class="jxr_comment">// division operations. (2 ^ 27) / 10 = 13421772. Add one to</em>
<a name="71" href="#71">71</a>              <em class="jxr_comment">// value to correct rounding error.</em>
<a name="72" href="#72">72</a>              <strong class="jxr_keyword">int</strong> d = ((value + 1) * 13421772) &gt;&gt; 27;
<a name="73" href="#73">73</a>              buf.append((<strong class="jxr_keyword">char</strong>) (d + '0'));
<a name="74" href="#74">74</a>              <em class="jxr_comment">// Append remainder by calculating (value - d * 10).</em>
<a name="75" href="#75">75</a>              buf.append((<strong class="jxr_keyword">char</strong>) (value - (d &lt;&lt; 3) - (d &lt;&lt; 1) + '0'));
<a name="76" href="#76">76</a>          } <strong class="jxr_keyword">else</strong> {
<a name="77" href="#77">77</a>              <strong class="jxr_keyword">int</strong> digits;
<a name="78" href="#78">78</a>              <strong class="jxr_keyword">if</strong> (value &lt; 1000) {
<a name="79" href="#79">79</a>                  digits = 3;
<a name="80" href="#80">80</a>              } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (value &lt; 10000) {
<a name="81" href="#81">81</a>                  digits = 4;
<a name="82" href="#82">82</a>              } <strong class="jxr_keyword">else</strong> {
<a name="83" href="#83">83</a>                  digits = (<strong class="jxr_keyword">int</strong>)(Math.log(value) / LOG_10) + 1;
<a name="84" href="#84">84</a>              }
<a name="85" href="#85">85</a>              <strong class="jxr_keyword">for</strong> (; size &gt; digits; size--) {
<a name="86" href="#86">86</a>                  buf.append('0');
<a name="87" href="#87">87</a>              }
<a name="88" href="#88">88</a>              buf.append(Integer.toString(value));
<a name="89" href="#89">89</a>          }
<a name="90" href="#90">90</a>      }
<a name="91" href="#91">91</a>  
<a name="92" href="#92">92</a>      <em class="jxr_javadoccomment">/**</em>
<a name="93" href="#93">93</a>  <em class="jxr_javadoccomment">     * Converts an integer to a string, prepended with a variable amount of '0'</em>
<a name="94" href="#94">94</a>  <em class="jxr_javadoccomment">     * pad characters, and appends it to the given buffer.</em>
<a name="95" href="#95">95</a>  <em class="jxr_javadoccomment">     *</em>
<a name="96" href="#96">96</a>  <em class="jxr_javadoccomment">     * &lt;p&gt;This method is optimized for converting small values to strings.</em>
<a name="97" href="#97">97</a>  <em class="jxr_javadoccomment">     *</em>
<a name="98" href="#98">98</a>  <em class="jxr_javadoccomment">     * @param buf receives integer converted to a string</em>
<a name="99" href="#99">99</a>  <em class="jxr_javadoccomment">     * @param value value to convert to a string</em>
<a name="100" href="#100">100</a> <em class="jxr_javadoccomment">     * @param size minumum amount of digits to append</em>
<a name="101" href="#101">101</a> <em class="jxr_javadoccomment">     */</em>
<a name="102" href="#102">102</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> appendPaddedInteger(StringBuffer buf, <strong class="jxr_keyword">long</strong> value, <strong class="jxr_keyword">int</strong> size) {
<a name="103" href="#103">103</a>         <strong class="jxr_keyword">int</strong> intValue = (<strong class="jxr_keyword">int</strong>)value;
<a name="104" href="#104">104</a>         <strong class="jxr_keyword">if</strong> (intValue == value) {
<a name="105" href="#105">105</a>             appendPaddedInteger(buf, intValue, size);
<a name="106" href="#106">106</a>         } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (size &lt;= 19) {
<a name="107" href="#107">107</a>             buf.append(Long.toString(value));
<a name="108" href="#108">108</a>         } <strong class="jxr_keyword">else</strong> {
<a name="109" href="#109">109</a>             <strong class="jxr_keyword">if</strong> (value &lt; 0) {
<a name="110" href="#110">110</a>                 buf.append('-');
<a name="111" href="#111">111</a>                 <strong class="jxr_keyword">if</strong> (value != Long.MIN_VALUE) {
<a name="112" href="#112">112</a>                     value = -value;
<a name="113" href="#113">113</a>                 } <strong class="jxr_keyword">else</strong> {
<a name="114" href="#114">114</a>                     <strong class="jxr_keyword">for</strong> (; size &gt; 19; size--) {
<a name="115" href="#115">115</a>                         buf.append('0');
<a name="116" href="#116">116</a>                     }
<a name="117" href="#117">117</a>                     buf.append(<span class="jxr_string">"9223372036854775808"</span>);
<a name="118" href="#118">118</a>                     <strong class="jxr_keyword">return</strong>;
<a name="119" href="#119">119</a>                 }
<a name="120" href="#120">120</a>             }
<a name="121" href="#121">121</a>             <strong class="jxr_keyword">int</strong> digits = (<strong class="jxr_keyword">int</strong>)(Math.log(value) / LOG_10) + 1;
<a name="122" href="#122">122</a>             <strong class="jxr_keyword">for</strong> (; size &gt; digits; size--) {
<a name="123" href="#123">123</a>                 buf.append('0');
<a name="124" href="#124">124</a>             }
<a name="125" href="#125">125</a>             buf.append(Long.toString(value));
<a name="126" href="#126">126</a>         }
<a name="127" href="#127">127</a>     }
<a name="128" href="#128">128</a> 
<a name="129" href="#129">129</a>     <em class="jxr_javadoccomment">/**</em>
<a name="130" href="#130">130</a> <em class="jxr_javadoccomment">     * Converts an integer to a string, prepended with a variable amount of '0'</em>
<a name="131" href="#131">131</a> <em class="jxr_javadoccomment">     * pad characters, and writes it to the given writer.</em>
<a name="132" href="#132">132</a> <em class="jxr_javadoccomment">     *</em>
<a name="133" href="#133">133</a> <em class="jxr_javadoccomment">     * &lt;p&gt;This method is optimized for converting small values to strings.</em>
<a name="134" href="#134">134</a> <em class="jxr_javadoccomment">     *</em>
<a name="135" href="#135">135</a> <em class="jxr_javadoccomment">     * @param out receives integer converted to a string</em>
<a name="136" href="#136">136</a> <em class="jxr_javadoccomment">     * @param value value to convert to a string</em>
<a name="137" href="#137">137</a> <em class="jxr_javadoccomment">     * @param size minumum amount of digits to append</em>
<a name="138" href="#138">138</a> <em class="jxr_javadoccomment">     */</em>
<a name="139" href="#139">139</a> <em class="jxr_comment">//    public static void writePaddedInteger(Writer out, int value, int size)</em>
<a name="140" href="#140">140</a> <em class="jxr_comment">//        throws IOException</em>
<a name="141" href="#141">141</a> <em class="jxr_comment">//    {</em>
<a name="142" href="#142">142</a> <em class="jxr_comment">//        if (value &lt; 0) {</em>
<a name="143" href="#143">143</a> <em class="jxr_comment">//            out.write('-');</em>
<a name="144" href="#144">144</a> <em class="jxr_comment">//            if (value != Integer.MIN_VALUE) {</em>
<a name="145" href="#145">145</a> <em class="jxr_comment">//                value = -value;</em>
<a name="146" href="#146">146</a> <em class="jxr_comment">//            } else {</em>
<a name="147" href="#147">147</a> <em class="jxr_comment">//                for (; size &gt; 10; size--) {</em>
<a name="148" href="#148">148</a> <em class="jxr_comment">//                    out.write('0');</em>
<a name="149" href="#149">149</a> <em class="jxr_comment">//                }</em>
<a name="150" href="#150">150</a> <em class="jxr_comment">//                out.write("" + -(long)Integer.MIN_VALUE);</em>
<a name="151" href="#151">151</a> <em class="jxr_comment">//                return;</em>
<a name="152" href="#152">152</a> <em class="jxr_comment">//            }</em>
<a name="153" href="#153">153</a> <em class="jxr_comment">//        }</em>
<a name="154" href="#154">154</a> <em class="jxr_comment">//        if (value &lt; 10) {</em>
<a name="155" href="#155">155</a> <em class="jxr_comment">//            for (; size &gt; 1; size--) {</em>
<a name="156" href="#156">156</a> <em class="jxr_comment">//                out.write('0');</em>
<a name="157" href="#157">157</a> <em class="jxr_comment">//            }</em>
<a name="158" href="#158">158</a> <em class="jxr_comment">//            out.write(value + '0');</em>
<a name="159" href="#159">159</a> <em class="jxr_comment">//        } else if (value &lt; 100) {</em>
<a name="160" href="#160">160</a> <em class="jxr_comment">//            for (; size &gt; 2; size--) {</em>
<a name="161" href="#161">161</a> <em class="jxr_comment">//                out.write('0');</em>
<a name="162" href="#162">162</a> <em class="jxr_comment">//            }</em>
<a name="163" href="#163">163</a> <em class="jxr_comment">//            // Calculate value div/mod by 10 without using two expensive</em>
<a name="164" href="#164">164</a> <em class="jxr_comment">//            // division operations. (2 ^ 27) / 10 = 13421772. Add one to</em>
<a name="165" href="#165">165</a> <em class="jxr_comment">//            // value to correct rounding error.</em>
<a name="166" href="#166">166</a> <em class="jxr_comment">//            int d = ((value + 1) * 13421772) &gt;&gt; 27;</em>
<a name="167" href="#167">167</a> <em class="jxr_comment">//            out.write(d + '0');</em>
<a name="168" href="#168">168</a> <em class="jxr_comment">//            // Append remainder by calculating (value - d * 10).</em>
<a name="169" href="#169">169</a> <em class="jxr_comment">//            out.write(value - (d &lt;&lt; 3) - (d &lt;&lt; 1) + '0');</em>
<a name="170" href="#170">170</a> <em class="jxr_comment">//        } else {</em>
<a name="171" href="#171">171</a> <em class="jxr_comment">//            int digits;</em>
<a name="172" href="#172">172</a> <em class="jxr_comment">//            if (value &lt; 1000) {</em>
<a name="173" href="#173">173</a> <em class="jxr_comment">//                digits = 3;</em>
<a name="174" href="#174">174</a> <em class="jxr_comment">//            } else if (value &lt; 10000) {</em>
<a name="175" href="#175">175</a> <em class="jxr_comment">//                digits = 4;</em>
<a name="176" href="#176">176</a> <em class="jxr_comment">//            } else {</em>
<a name="177" href="#177">177</a> <em class="jxr_comment">//                digits = (int)(Math.log(value) / LOG_10) + 1;</em>
<a name="178" href="#178">178</a> <em class="jxr_comment">//            }</em>
<a name="179" href="#179">179</a> <em class="jxr_comment">//            for (; size &gt; digits; size--) {</em>
<a name="180" href="#180">180</a> <em class="jxr_comment">//                out.write('0');</em>
<a name="181" href="#181">181</a> <em class="jxr_comment">//            }</em>
<a name="182" href="#182">182</a> <em class="jxr_comment">//            out.write(Integer.toString(value));</em>
<a name="183" href="#183">183</a> <em class="jxr_comment">//        }</em>
<a name="184" href="#184">184</a> <em class="jxr_comment">//    }</em>
<a name="185" href="#185">185</a> <em class="jxr_comment">//</em>
<a name="186" href="#186">186</a> <em class="jxr_comment">//    </em><em class="jxr_javadoccomment">/**</em>
<a name="187" href="#187">187</a> <em class="jxr_javadoccomment">//     * Converts an integer to a string, prepended with a variable amount of '0'</em>
<a name="188" href="#188">188</a> <em class="jxr_javadoccomment">//     * pad characters, and writes it to the given writer.</em>
<a name="189" href="#189">189</a> <em class="jxr_javadoccomment">//     *</em>
<a name="190" href="#190">190</a> <em class="jxr_javadoccomment">//     * &lt;p&gt;This method is optimized for converting small values to strings.</em>
<a name="191" href="#191">191</a> <em class="jxr_javadoccomment">//     *</em>
<a name="192" href="#192">192</a> <em class="jxr_javadoccomment">//     * @param out receives integer converted to a string</em>
<a name="193" href="#193">193</a> <em class="jxr_javadoccomment">//     * @param value value to convert to a string</em>
<a name="194" href="#194">194</a> <em class="jxr_javadoccomment">//     * @param size minumum amount of digits to append</em>
<a name="195" href="#195">195</a> <em class="jxr_javadoccomment">//     */</em>
<a name="196" href="#196">196</a> <em class="jxr_comment">//    public static void writePaddedInteger(Writer out, long value, int size)</em>
<a name="197" href="#197">197</a> <em class="jxr_comment">//        throws IOException</em>
<a name="198" href="#198">198</a> <em class="jxr_comment">//    {</em>
<a name="199" href="#199">199</a> <em class="jxr_comment">//        int intValue = (int)value;</em>
<a name="200" href="#200">200</a> <em class="jxr_comment">//        if (intValue == value) {</em>
<a name="201" href="#201">201</a> <em class="jxr_comment">//            writePaddedInteger(out, intValue, size);</em>
<a name="202" href="#202">202</a> <em class="jxr_comment">//        } else if (size &lt;= 19) {</em>
<a name="203" href="#203">203</a> <em class="jxr_comment">//            out.write(Long.toString(value));</em>
<a name="204" href="#204">204</a> <em class="jxr_comment">//        } else {</em>
<a name="205" href="#205">205</a> <em class="jxr_comment">//            if (value &lt; 0) {</em>
<a name="206" href="#206">206</a> <em class="jxr_comment">//                out.write('-');</em>
<a name="207" href="#207">207</a> <em class="jxr_comment">//                if (value != Long.MIN_VALUE) {</em>
<a name="208" href="#208">208</a> <em class="jxr_comment">//                    value = -value;</em>
<a name="209" href="#209">209</a> <em class="jxr_comment">//                } else {</em>
<a name="210" href="#210">210</a> <em class="jxr_comment">//                    for (; size &gt; 19; size--) {</em>
<a name="211" href="#211">211</a> <em class="jxr_comment">//                        out.write('0');</em>
<a name="212" href="#212">212</a> <em class="jxr_comment">//                    }</em>
<a name="213" href="#213">213</a> <em class="jxr_comment">//                    out.write("9223372036854775808");</em>
<a name="214" href="#214">214</a> <em class="jxr_comment">//                    return;</em>
<a name="215" href="#215">215</a> <em class="jxr_comment">//                }</em>
<a name="216" href="#216">216</a> <em class="jxr_comment">//            }</em>
<a name="217" href="#217">217</a> <em class="jxr_comment">//            int digits = (int)(Math.log(value) / LOG_10) + 1;</em>
<a name="218" href="#218">218</a> <em class="jxr_comment">//            for (; size &gt; digits; size--) {</em>
<a name="219" href="#219">219</a> <em class="jxr_comment">//                out.write('0');</em>
<a name="220" href="#220">220</a> <em class="jxr_comment">//            }</em>
<a name="221" href="#221">221</a> <em class="jxr_comment">//            out.write(Long.toString(value));</em>
<a name="222" href="#222">222</a> <em class="jxr_comment">//        }</em>
<a name="223" href="#223">223</a> <em class="jxr_comment">//    }</em>
<a name="224" href="#224">224</a> 
<a name="225" href="#225">225</a>     <em class="jxr_javadoccomment">/**</em>
<a name="226" href="#226">226</a> <em class="jxr_javadoccomment">     * Converts an integer to a string, and appends it to the given buffer.</em>
<a name="227" href="#227">227</a> <em class="jxr_javadoccomment">     *</em>
<a name="228" href="#228">228</a> <em class="jxr_javadoccomment">     * &lt;p&gt;This method is optimized for converting small values to strings.</em>
<a name="229" href="#229">229</a> <em class="jxr_javadoccomment">     *</em>
<a name="230" href="#230">230</a> <em class="jxr_javadoccomment">     * @param buf receives integer converted to a string</em>
<a name="231" href="#231">231</a> <em class="jxr_javadoccomment">     * @param value value to convert to a string</em>
<a name="232" href="#232">232</a> <em class="jxr_javadoccomment">     */</em>
<a name="233" href="#233">233</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> appendUnpaddedInteger(StringBuffer buf, <strong class="jxr_keyword">int</strong> value) {
<a name="234" href="#234">234</a>         <strong class="jxr_keyword">if</strong> (value &lt; 0) {
<a name="235" href="#235">235</a>             buf.append('-');
<a name="236" href="#236">236</a>             <strong class="jxr_keyword">if</strong> (value != Integer.MIN_VALUE) {
<a name="237" href="#237">237</a>                 value = -value;
<a name="238" href="#238">238</a>             } <strong class="jxr_keyword">else</strong> {
<a name="239" href="#239">239</a>                 buf.append(<span class="jxr_string">""</span> + -(<strong class="jxr_keyword">long</strong>)Integer.MIN_VALUE);
<a name="240" href="#240">240</a>                 <strong class="jxr_keyword">return</strong>;
<a name="241" href="#241">241</a>             }
<a name="242" href="#242">242</a>         }
<a name="243" href="#243">243</a>         <strong class="jxr_keyword">if</strong> (value &lt; 10) {
<a name="244" href="#244">244</a>             buf.append((<strong class="jxr_keyword">char</strong>)(value + '0'));
<a name="245" href="#245">245</a>         } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (value &lt; 100) {
<a name="246" href="#246">246</a>             <em class="jxr_comment">// Calculate value div/mod by 10 without using two expensive</em>
<a name="247" href="#247">247</a>             <em class="jxr_comment">// division operations. (2 ^ 27) / 10 = 13421772. Add one to</em>
<a name="248" href="#248">248</a>             <em class="jxr_comment">// value to correct rounding error.</em>
<a name="249" href="#249">249</a>             <strong class="jxr_keyword">int</strong> d = ((value + 1) * 13421772) &gt;&gt; 27;
<a name="250" href="#250">250</a>             buf.append((<strong class="jxr_keyword">char</strong>) (d + '0'));
<a name="251" href="#251">251</a>             <em class="jxr_comment">// Append remainder by calculating (value - d * 10).</em>
<a name="252" href="#252">252</a>             buf.append((<strong class="jxr_keyword">char</strong>) (value - (d &lt;&lt; 3) - (d &lt;&lt; 1) + '0'));
<a name="253" href="#253">253</a>         } <strong class="jxr_keyword">else</strong> {
<a name="254" href="#254">254</a>             buf.append(Integer.toString(value));
<a name="255" href="#255">255</a>         }
<a name="256" href="#256">256</a>     }
<a name="257" href="#257">257</a> 
<a name="258" href="#258">258</a>     <em class="jxr_javadoccomment">/**</em>
<a name="259" href="#259">259</a> <em class="jxr_javadoccomment">     * Converts an integer to a string, and appends it to the given buffer.</em>
<a name="260" href="#260">260</a> <em class="jxr_javadoccomment">     *</em>
<a name="261" href="#261">261</a> <em class="jxr_javadoccomment">     * &lt;p&gt;This method is optimized for converting small values to strings.</em>
<a name="262" href="#262">262</a> <em class="jxr_javadoccomment">     *</em>
<a name="263" href="#263">263</a> <em class="jxr_javadoccomment">     * @param buf receives integer converted to a string</em>
<a name="264" href="#264">264</a> <em class="jxr_javadoccomment">     * @param value value to convert to a string</em>
<a name="265" href="#265">265</a> <em class="jxr_javadoccomment">     */</em>
<a name="266" href="#266">266</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> appendUnpaddedInteger(StringBuffer buf, <strong class="jxr_keyword">long</strong> value) {
<a name="267" href="#267">267</a>         <strong class="jxr_keyword">int</strong> intValue = (<strong class="jxr_keyword">int</strong>)value;
<a name="268" href="#268">268</a>         <strong class="jxr_keyword">if</strong> (intValue == value) {
<a name="269" href="#269">269</a>             appendUnpaddedInteger(buf, intValue);
<a name="270" href="#270">270</a>         } <strong class="jxr_keyword">else</strong> {
<a name="271" href="#271">271</a>             buf.append(Long.toString(value));
<a name="272" href="#272">272</a>         }
<a name="273" href="#273">273</a>     }
<a name="274" href="#274">274</a> 
<a name="275" href="#275">275</a>     <em class="jxr_javadoccomment">/**</em>
<a name="276" href="#276">276</a> <em class="jxr_javadoccomment">     * Converts an integer to a string, and writes it to the given writer.</em>
<a name="277" href="#277">277</a> <em class="jxr_javadoccomment">     *</em>
<a name="278" href="#278">278</a> <em class="jxr_javadoccomment">     * &lt;p&gt;This method is optimized for converting small values to strings.</em>
<a name="279" href="#279">279</a> <em class="jxr_javadoccomment">     *</em>
<a name="280" href="#280">280</a> <em class="jxr_javadoccomment">     * @param out receives integer converted to a string</em>
<a name="281" href="#281">281</a> <em class="jxr_javadoccomment">     * @param value value to convert to a string</em>
<a name="282" href="#282">282</a> <em class="jxr_javadoccomment">     */</em>
<a name="283" href="#283">283</a> <em class="jxr_comment">//    public static void writeUnpaddedInteger(Writer out, int value)</em>
<a name="284" href="#284">284</a> <em class="jxr_comment">//        throws IOException</em>
<a name="285" href="#285">285</a> <em class="jxr_comment">//    {</em>
<a name="286" href="#286">286</a> <em class="jxr_comment">//        if (value &lt; 0) {</em>
<a name="287" href="#287">287</a> <em class="jxr_comment">//            out.write('-');</em>
<a name="288" href="#288">288</a> <em class="jxr_comment">//            if (value != Integer.MIN_VALUE) {</em>
<a name="289" href="#289">289</a> <em class="jxr_comment">//                value = -value;</em>
<a name="290" href="#290">290</a> <em class="jxr_comment">//            } else {</em>
<a name="291" href="#291">291</a> <em class="jxr_comment">//                out.write("" + -(long)Integer.MIN_VALUE);</em>
<a name="292" href="#292">292</a> <em class="jxr_comment">//                return;</em>
<a name="293" href="#293">293</a> <em class="jxr_comment">//            }</em>
<a name="294" href="#294">294</a> <em class="jxr_comment">//        }</em>
<a name="295" href="#295">295</a> <em class="jxr_comment">//        if (value &lt; 10) {</em>
<a name="296" href="#296">296</a> <em class="jxr_comment">//            out.write(value + '0');</em>
<a name="297" href="#297">297</a> <em class="jxr_comment">//        } else if (value &lt; 100) {</em>
<a name="298" href="#298">298</a> <em class="jxr_comment">//            // Calculate value div/mod by 10 without using two expensive</em>
<a name="299" href="#299">299</a> <em class="jxr_comment">//            // division operations. (2 ^ 27) / 10 = 13421772. Add one to</em>
<a name="300" href="#300">300</a> <em class="jxr_comment">//            // value to correct rounding error.</em>
<a name="301" href="#301">301</a> <em class="jxr_comment">//            int d = ((value + 1) * 13421772) &gt;&gt; 27;</em>
<a name="302" href="#302">302</a> <em class="jxr_comment">//            out.write(d + '0');</em>
<a name="303" href="#303">303</a> <em class="jxr_comment">//            // Append remainder by calculating (value - d * 10).</em>
<a name="304" href="#304">304</a> <em class="jxr_comment">//            out.write(value - (d &lt;&lt; 3) - (d &lt;&lt; 1) + '0');</em>
<a name="305" href="#305">305</a> <em class="jxr_comment">//        } else {</em>
<a name="306" href="#306">306</a> <em class="jxr_comment">//            out.write(Integer.toString(value));</em>
<a name="307" href="#307">307</a> <em class="jxr_comment">//        }</em>
<a name="308" href="#308">308</a> <em class="jxr_comment">//    }</em>
<a name="309" href="#309">309</a> <em class="jxr_comment">//</em>
<a name="310" href="#310">310</a> <em class="jxr_comment">//    </em><em class="jxr_javadoccomment">/**</em>
<a name="311" href="#311">311</a> <em class="jxr_javadoccomment">//     * Converts an integer to a string, and writes it to the given writer.</em>
<a name="312" href="#312">312</a> <em class="jxr_javadoccomment">//     *</em>
<a name="313" href="#313">313</a> <em class="jxr_javadoccomment">//     * &lt;p&gt;This method is optimized for converting small values to strings.</em>
<a name="314" href="#314">314</a> <em class="jxr_javadoccomment">//     *</em>
<a name="315" href="#315">315</a> <em class="jxr_javadoccomment">//     * @param out receives integer converted to a string</em>
<a name="316" href="#316">316</a> <em class="jxr_javadoccomment">//     * @param value value to convert to a string</em>
<a name="317" href="#317">317</a> <em class="jxr_javadoccomment">//     */</em>
<a name="318" href="#318">318</a> <em class="jxr_comment">//    public static void writeUnpaddedInteger(Writer out, long value)</em>
<a name="319" href="#319">319</a> <em class="jxr_comment">//        throws IOException</em>
<a name="320" href="#320">320</a> <em class="jxr_comment">//    {</em>
<a name="321" href="#321">321</a> <em class="jxr_comment">//        int intValue = (int)value;</em>
<a name="322" href="#322">322</a> <em class="jxr_comment">//        if (intValue == value) {</em>
<a name="323" href="#323">323</a> <em class="jxr_comment">//            writeUnpaddedInteger(out, intValue);</em>
<a name="324" href="#324">324</a> <em class="jxr_comment">//        } else {</em>
<a name="325" href="#325">325</a> <em class="jxr_comment">//            out.write(Long.toString(value));</em>
<a name="326" href="#326">326</a> <em class="jxr_comment">//        }</em>
<a name="327" href="#327">327</a> <em class="jxr_comment">//    }</em>
<a name="328" href="#328">328</a> 
<a name="329" href="#329">329</a>     <em class="jxr_javadoccomment">/**</em>
<a name="330" href="#330">330</a> <em class="jxr_javadoccomment">     * Calculates the number of decimal digits for the given value,</em>
<a name="331" href="#331">331</a> <em class="jxr_javadoccomment">     * including the sign.</em>
<a name="332" href="#332">332</a> <em class="jxr_javadoccomment">     */</em>
<a name="333" href="#333">333</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">int</strong> calculateDigitCount(<strong class="jxr_keyword">long</strong> value) {
<a name="334" href="#334">334</a>         <strong class="jxr_keyword">if</strong> (value &lt; 0) {
<a name="335" href="#335">335</a>             <strong class="jxr_keyword">if</strong> (value != Long.MIN_VALUE) {
<a name="336" href="#336">336</a>                 <strong class="jxr_keyword">return</strong> calculateDigitCount(-value) + 1;
<a name="337" href="#337">337</a>             } <strong class="jxr_keyword">else</strong> {
<a name="338" href="#338">338</a>                 <strong class="jxr_keyword">return</strong> 20;
<a name="339" href="#339">339</a>             }
<a name="340" href="#340">340</a>         }
<a name="341" href="#341">341</a>         <strong class="jxr_keyword">return</strong> 
<a name="342" href="#342">342</a>             (value &lt; 10 ? 1 :
<a name="343" href="#343">343</a>              (value &lt; 100 ? 2 :
<a name="344" href="#344">344</a>               (value &lt; 1000 ? 3 :
<a name="345" href="#345">345</a>                (value &lt; 10000 ? 4 :
<a name="346" href="#346">346</a>                 ((<strong class="jxr_keyword">int</strong>)(Math.log(value) / LOG_10) + 1)))));
<a name="347" href="#347">347</a>     }
<a name="348" href="#348">348</a> 
<a name="349" href="#349">349</a>     <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">int</strong> parseTwoDigits(String text, <strong class="jxr_keyword">int</strong> position) {
<a name="350" href="#350">350</a>         <strong class="jxr_keyword">int</strong> value = text.charAt(position) - '0';
<a name="351" href="#351">351</a>         <strong class="jxr_keyword">return</strong> ((value &lt;&lt; 3) + (value &lt;&lt; 1)) + text.charAt(position + 1) - '0';
<a name="352" href="#352">352</a>     }
<a name="353" href="#353">353</a> 
<a name="354" href="#354">354</a>     <strong class="jxr_keyword">static</strong> String createErrorMessage(<strong class="jxr_keyword">final</strong> String text, <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> errorPos) {
<a name="355" href="#355">355</a>         <strong class="jxr_keyword">int</strong> sampleLen = errorPos + 32;
<a name="356" href="#356">356</a>         String sampleText;
<a name="357" href="#357">357</a>         <strong class="jxr_keyword">if</strong> (text.length() &lt;= sampleLen + 3) {
<a name="358" href="#358">358</a>             sampleText = text;
<a name="359" href="#359">359</a>         } <strong class="jxr_keyword">else</strong> {
<a name="360" href="#360">360</a>             sampleText = text.substring(0, sampleLen).concat(<span class="jxr_string">"..."</span>);
<a name="361" href="#361">361</a>         }
<a name="362" href="#362">362</a>         
<a name="363" href="#363">363</a>         <strong class="jxr_keyword">if</strong> (errorPos &lt;= 0) {
<a name="364" href="#364">364</a>             <strong class="jxr_keyword">return</strong> <span class="jxr_string">"Invalid format: \&quot;"</span> + sampleText + '&quot;';
<a name="365" href="#365">365</a>         }
<a name="366" href="#366">366</a>         
<a name="367" href="#367">367</a>         <strong class="jxr_keyword">if</strong> (errorPos &gt;= text.length()) {
<a name="368" href="#368">368</a>             <strong class="jxr_keyword">return</strong> <span class="jxr_string">"Invalid format: \&quot;"</span> + sampleText + <span class="jxr_string">"\&quot; is too short"</span>;
<a name="369" href="#369">369</a>         }
<a name="370" href="#370">370</a>         
<a name="371" href="#371">371</a>         <strong class="jxr_keyword">return</strong> <span class="jxr_string">"Invalid format: \&quot;"</span> + sampleText + <span class="jxr_string">"\&quot; is malformed at \&quot;"</span> +
<a name="372" href="#372">372</a>             sampleText.substring(errorPos) + '&quot;';
<a name="373" href="#373">373</a>     }
<a name="374" href="#374">374</a> 
<a name="375" href="#375">375</a> }
</pre>
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